"Ummm in a fitting w @MonicaRoseStyle I think my butt looks too big in these jeans," Kardashian, 31, wrote on her blog beneath a closeup shot of said rear end in a pair of shiny, super-clingy denim jeans.

With a slimdown in mind, Kardashian kicked off her week on Monday with an "early morning double workout," she Tweeted. "Bootcamp and pilates. Love starting my Monday like this!"

The most recent episode of Keeping Up with the Kardashians, meanwhile, laid bare some considerable tensions between Kim and her siblings -- especially little brother Rob, 25, who burst into tears during a family therapy session.

"Kim is the most selfish person and doesn't want to ever include me," Rob later said following a blowout fight.